Finding the Fourth Proportional to 353,838.60, 488,919.06 and 282,804.84
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Solution
The fourth proportional to 353,838.60, 488,919.06 and 282,804.84 is: 390,767.65
Step by Step Solution
- Step 1: Write the proportion equation
353,838.60 : 488,919.06 = 282,804.84 : x - Step 2: Convert to fraction form
353,838.60/488,919.06 = 282,804.84/x - Step 3: Cross multiply
353,838.60x = 488,919.06 × 282,804.84 - Step 4: Simplify right side
353,838.60x = 138,268,676,536.25 - Step 5: Solve for x
x = 138,268,676,536.25/353,838.60 - Step 6: Final answer
x = 390,767.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.